Aug 01 21:59:23.527 INFO checking slot-0.2.2 against 1.27.2 for lazy_static-1
Aug 01 21:59:23.527 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:59:23.527 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:59:23.527 INFO running `"docker" "create" "-v" "/tmp/crater.IvHpJ4ZCxdir:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 21:59:23.665 INFO blam! 8ec83e36f29982e201caf654f128cddebdc31740014916a1361e85f7552879b5
Aug 01 21:59:23.667 INFO running `"docker" "start" "-a" "8ec83e36f29982e201caf654f128cddebdc31740014916a1361e85f7552879b5"`
Aug 01 21:59:25.170 INFO kablam!     Checking slot v0.2.2 (file:///source)
Aug 01 21:59:25.664 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:59:25.664 INFO kablam!  --> src/lib.rs:3:1
Aug 01 21:59:25.664 INFO kablam!   |
Aug 01 21:59:25.664 INFO kablam! 3 | #![feature(untagged_unions)]
Aug 01 21:59:25.664 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:59:25.665 INFO kablam! 
Aug 01 21:59:25.665 INFO kablam! error: aborting due to previous error
Aug 01 21:59:25.665 INFO kablam! 
Aug 01 21:59:25.665 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:59:25.669 INFO kablam! error: Could not compile `slot`.
Aug 01 21:59:25.669 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:59:25.713 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:59:25.713 INFO kablam!  --> src/lib.rs:3:1
Aug 01 21:59:25.713 INFO kablam!   |
Aug 01 21:59:25.713 INFO kablam! 3 | #![feature(untagged_unions)]
Aug 01 21:59:25.713 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:59:25.713 INFO kablam! 
Aug 01 21:59:25.713 INFO kablam! error: aborting due to previous error
Aug 01 21:59:25.714 INFO kablam! 
Aug 01 21:59:25.714 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:59:25.721 INFO kablam! error: Could not compile `slot`.
Aug 01 21:59:25.721 INFO kablam! 
Aug 01 21:59:25.721 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 21:59:25.723 INFO kablam! su: No module specific data is present
Aug 01 21:59:26.474 INFO running `"docker" "rm" "-f" "8ec83e36f29982e201caf654f128cddebdc31740014916a1361e85f7552879b5"`
Aug 01 21:59:26.589 INFO blam! 8ec83e36f29982e201caf654f128cddebdc31740014916a1361e85f7552879b5